pub fn waders() -> Result<DataFrame, PolarsError>Expand description
§Counts of Waders at 15 Sites in South Africa
§Description:
The ‘waders’ data frame has 15 rows and 19 columns. The entries are counts of waders in summer.
§Usage:
waders
§Format:
This data frame contains the following columns (species)
- ‘S1’ Oystercatcher
- ‘S2’ White-fronted Plover
- ‘S3’ Kitt Lutz’s Plover
- ‘S4’ Three-banded Plover
- ‘S5’ Grey Plover
- ‘S6’ Ringed Plover
- ‘S7’ Bar-tailed Godwit
- ‘S8’ Whimbrel
- ‘S9’ Marsh Sandpiper
- ‘S10’ Greenshank
- ‘S11’ Common Sandpiper
- ‘S12’ Turnstone
- ‘S13’ Knot
- ‘S14’ Sanderling
- ‘S15’ Little Stint
- ‘S16’ Curlew Sandpiper
- ‘S17’ Ruff
- ‘S18’ Avocet
- ‘S19’ Black-winged Stilt
The rows are the sites:
- A = Namibia North coast
- B = Namibia North wetland
- C = Namibia South coast
- D = Namibia South wetland
- E = Cape North coast
- F = Cape North wetland
- G = Cape West coast
- H = Cape West wetland
- I = Cape South coast
- J = Cape South wetland
- K = Cape East coast
- L = Cape East wetland
- M = Transkei coast
- N = Natal coast
- O = Natal wetland
§Source:
J.C. Gower and D.J. Hand (1996) Biplots Chapman & Hall Table 9.1. Quoted as from:
R.W. Summers, L.G. Underhill, D.J. Pearson and D.A. Scott (1987) Wader migration systems in south and eastern Africa and western Asia. Wader Study Group Bulletin 49 Supplement, 15-34.
§Examples:
plot(corresp(waders, nf=2))